Vacuum cleaner



FIG. 1 is a front and right side perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The details shown in broken lines form no part of the claimed design. The pipe shown broken away is understood to represent indeterminate length. 

We claim the ornamental design for a vacuum cleaner, as shown and described. 